#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# This script should be invoked from the subversion post-commit hook like this:
#
#  REPOS="$1"
#  REV="$2"
#  $REPOS/hooks/post-commit.trac-create-version "$REPOS" "$REV"
#
# Daniel Serodio <dserodio gmail>

import re
import sys
import os

TRAC_ENV_ROOT = '/var/lib/trac'
versions_re = re.compile(r'^A\W*(\w+)/tags/RELEASE_([^/]+)')

def main():
    if len(sys.argv) != 3:
        print >> sys.stderr, 'Usage: %s <repository> <revision>' % sys.argv[0]
        sys.exit(1)

    repos = sys.argv[1]
    rev = sys.argv[2]
    changed_files = os.popen("svnlook changed %s %s" % (repos, rev)).readlines()

    for file in changed_files:
        match = versions_re.search(file)
        if match:
            project = match.group(1)
            version = match.group(2)
            trac_env = "%s/%s" % (TRAC_ENV_ROOT, project)
            os.popen("trac-admin %s version add %s now" % (trac_env, version))
    sys.exit(0)

if __name__ == '__main__':
    main()